In fact, Mahmoud Abbas himself is a member of Fatah. So it is pretty much here to stay. But Greg's real point is that we pundits need to be more precise when talking about different terrorist organizations, lest we say something we don't mean. To that end, Greg recommends consulting the "Terrorism: Questions & Answers" website, a project suppored by the Council on Foreign Relations. I, for one, have every intention of doing so.